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authorRussell King <rmk+kernel@arm.linux.org.uk>2009-11-26 16:19:58 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-02-15 15:22:20 +0000
commita9c9147eb9b1dba0ce567a41897c7773b4d1b0bc (patch)
tree178938c909f4717c2e599d6f3de954d7ee8a7f21 /arch/arm/mm/cache-v4wt.S
parent93f1d629e22b08642eb713ad96ac2cb9ade0641c (diff)
downloadop-kernel-dev-a9c9147eb9b1dba0ce567a41897c7773b4d1b0bc.zip
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ARM: dma-mapping: provide per-cpu type map/unmap functions
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-By: Santosh Shilimkar <santosh.shilimkar@ti.com>
Diffstat (limited to 'arch/arm/mm/cache-v4wt.S')
-rw-r--r--arch/arm/mm/cache-v4wt.S25
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/mm/cache-v4wt.S b/arch/arm/mm/cache-v4wt.S
index b3b7410..3d8dad5 100644
--- a/arch/arm/mm/cache-v4wt.S
+++ b/arch/arm/mm/cache-v4wt.S
@@ -172,6 +172,29 @@ ENTRY(v4wt_dma_clean_range)
.globl v4wt_dma_flush_range
.equ v4wt_dma_flush_range, v4wt_dma_inv_range
+/*
+ * dma_unmap_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(v4wt_dma_unmap_area)
+ add r1, r1, r0
+ teq r2, #DMA_TO_DEVICE
+ bne v4wt_dma_inv_range
+ /* FALLTHROUGH */
+
+/*
+ * dma_map_area(start, size, dir)
+ * - start - kernel virtual start address
+ * - size - size of region
+ * - dir - DMA direction
+ */
+ENTRY(v4wt_dma_map_area)
+ mov pc, lr
+ENDPROC(v4wt_dma_unmap_area)
+ENDPROC(v4wt_dma_map_area)
+
__INITDATA
.type v4wt_cache_fns, #object
@@ -182,6 +205,8 @@ ENTRY(v4wt_cache_fns)
.long v4wt_coherent_kern_range
.long v4wt_coherent_user_range
.long v4wt_flush_kern_dcache_area
+ .long v4wt_dma_map_area
+ .long v4wt_dma_unmap_area
.long v4wt_dma_inv_range
.long v4wt_dma_clean_range
.long v4wt_dma_flush_range
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